@Starbar48 if your Sky hub is the one on the second line in the picture on this page https://www.sky.com/help/articles/set-up-hub-which-sky-hub-do-you-have Sky will normally replace it if you call them. The others are all current types and if working are not normally swapped.
While its possible your issue is down to a faulty hub it is more likely a line issue especially currently as the very heavy rain has caused loads of issues. If you want advice from forum members post your current hub's stats Find your Sky Broadband router statistics
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65inch Sky Glass, 3 Sky Streaming Pucks, Sky Ultrafast + and Sky SR213(white Wifi Max hub) main Wifi from 3 TP-Link Deco M4 units in access point mode
